Answer Posted / perservance
it is used for earth fault protection,this kind of C.T
covers all the phases ,the secondary side of it is
connected to trip coil of CIRCUIT BREAKER.Under no fault
conditions the vector sum of all the three phase currents
is zero so no output to c.t secondary but when there is a
earth fault ,the sum would not remain zero and the trip
coil would act and circuit breaker would trip.
the disadvantage being that it would not detect phase to
phase fault,seldom used,not seen anywhere in my plant.
| Is This Answer Correct ? | 119 Yes | 13 No |
Post New Answer View All Answers
Hello seniors m an engineering student in 3rd yr..i want to know what are the software course in electrical field?i wanted to do certification course but i dont know much about the course?..Regards
Draw a block diagramof Three UPS systems connected in Parallel mode?
How to check the Bushings of the transformer?
a governer in an Ic engine controls the
how can service sitting be setted for MCCB?Example for sittings IR (CURRENT RATING),IS(CURRENT STARTING)IO (current operating)?
whats the existence of reactive power and when it arises?
Explain the iniluencc of short circuit ratio on the pert'orniancc of synchronous machine.
Greeting to all members, How to calculate spill current when we have different ratio CT and Class for REF(Low Imp) I have 500/1A 5P20 @line side n 400/1A CL.X @ Neutral.
prove that power consumed in 3 phase delta system is 3 times as compared to 3 phase star system
There is air in a room . the top and bottom of the room are at constant temp. T1 and T2. DRAW THE temp profiles if a. T1 greater than T2 b. T1 less than T2
What are steps to be taken while designing of DYN11 distribution transformer to achieve magnetising balance?
plz send me the syllabus or any sample paper for engineer trainee recruitment if any,on ravinder911@yahoo.com
I want to know how to calculate the size of electricity cable in building?
how the inner and outer body is separated in aircrafts?
how generator avr give to the input?
